Setra Systems SRH300 Manual de usuario

Model SRH300

Operating Instructions

Setra Systems, Inc.

159 Swanson Road, Boxborough, MA 01719

800.257.3872 • www.setra.com

Contents

1.0 General information ..........................................................................................................................3

2.0 Caution.................................................................................................................................................3

3.0 Connection diagrams.........................................................................................................................3

4.0 LED indication......................................................................................................................................4

5.0 Display ..................................................................................................................................................5

6.0 Scope of supply...................................................................................................................................5

7.0 BACnet or Modbus setup.................................................................................................................6

7.1 BACnet address using address switch................................................................................6

7.2 BACnet address using software............................................................................................7

7.3 Modbus address using software ..........................................................................................9

7.4 Modbus address using address switch.............................................................................11

7.5 Modbus setup.........................................................................................................................12

8.0 Technical data ...................................................................................................................................13

9.0 Setup and adjustment ....................................................................................................................14

10.0 Maintenance .................................................................................................................................15

10.1 Humidity calibration and adjustment ..............................................................................15

10.2 Temperature calibration and adjustment .......................................................................15

10.3 When employed in dusty, polluted environment............................................................15

11.0 Accessories ....................................................................................................................................16

12.0 Returning products for repair.......................................................................................................17

12.1 Calibrated services ..............................................................................................................17

13.0 Limited warranty and limited repair ..........................................................................................18

3.0 Connection diagrams

1.0 General Information

The SRH300 transmitter, available for wall or duct mounting as well as with remote probe,

is designed for highly accurate measurement of humidity and temperature in demanding

climate control applications.

For use in special applications do not hesitate to contact Setra or a local distributor.

2.0 Caution

• For accurate measurement, it is essential that the temperature of the sensing probe and the

sensing head is same as the temperature of the air to measure. Avoid mounting the SRH300

transmitter in a way which creates temperature gradients along the probe.

• The transmitter and the sensing head should not be exposed to extreme mechanical stress.

• The transmitter must be operated with the lter cap on at all times. DO NOT touch the

sensors inside the sensing head.

SRH300 - Analog milliamps

20...30 V DC RL<500 Ohm

11...30 V DC RL<50 Ohm

Output: 4-20 mA

Output:

Modbus RTU or

BACnet MS/TP

15...35 V DC

24 V AC ±20 %

OUT1

OUT2

Output: 0-5 V

0-10 V

0-20 mA

15...35 V DC

24 V AC ±20 %

mA V

OUT1

OUT2

SRH300 - Analog volts

Only for remote probe!

Important: The SRH300 (4-20 mA) with display operates correctly

only if both outputs are connected. If no outputs are connected,

then a jumper wire between the two outputs is required (in addition

two negative power wire).

20...30 V DC RL<500 Ohm

11...30 V DC RL<50 Ohm

Output: 4-20 mA

Output:

Modbus RTU or

BACnet MS/TP

15...35 V DC

24 V AC ±20 %

OUT1

OUT2

Output: 0-5 V

0-10 V

0-20 mA

15...35 V DC

24 V AC ±20 %

mA V

OUT1

OUT2

SRH300 - Digital

Only for remote probe!

Bus termination resistor 120 Ω (jumper)

configuration connector

4.0 LED indication (remove faceplate to view)

Green LED Blue LED

On Everything okay

Setra Product Conguration Adapter

(SETRAPCA1) is powered, no

communication in progress

Flashing

Main board does not recognize the

measurement electronics inside the

sensing probe

PCA powered, communication in

progress

Off No power supply or main board failure PCA not connected to the SRH300

NOTE:

This is an intelligent probe with digital output and as such it is interchangeable. In case the

probe or its cable gets destroyed or if a longer cable is needed, please order a replacement

probe according to SRH300 accessory sheet. The replacement probe shall be installed as

described above.

IMPORTANT:

Make sure that the cable ttings are closed tightly for both SRP300 probe cable and for the

power supply and outputs cable. This is necessary for assuring the protection class (IP class)

of the enclosure according to SRH300 specication, as well as for stress relief at the screw

terminals on the SRH300 board.

SRP300

The SRH300 with remote probe are supplied as separate items. The probe is connected as

shown below.

• First, install rst the cable tting (included in SRH300 scope of supply) onto the SRH300

enclosure.

• Before connecting the probe, disconnect the SRH300 power supply.

• Insert the probe cable through the cable tting and connect it to the screw terminals

according to the connection diagram below.

5.0 Display

Factory Setup:

The display shows the two parameters selected

for output 1 and output 2, RH and T.

User Setup:

The user can change the display layout to 1, 2 or

3 lines and select the parameters to be displayed

by using Setra Product Conguration Software

(free download from www.setra.com) and the

optional SETRAPCA1 Product Configuration

Adapter (not included in the scope of supply).

IMPORTANT:

The SRH300 (4 to 20 mA) with display operates correctly only if both outputs (RH and T) are

connected. If you choose not to send output signals to a remote monitoring location, the two

output connections must be joined using a jumper wire (not included). 4-20 mA units with no

display do not require a jumper and do not require both outputs to be connected. Voltage output

units also do not require both outputs to be connected.

Model

SRH300

Wall mount

(Type A)

SRH300

Duct mount

(Type B)

SRH300

Remote

version

(Type C)

Remote

probe* for

Type C

SRH300 according to ordering guide

Cable gland

Mounting materials

Mounting flange

Calibration & inspection certicate

(EN10204-3.1)

6.0 Scope of supply

7.0 BACnet or Modbus setup

7.1 Setting BACnet address using the address switch

Remove the units faceplate. You will see an address switch (pictured below). If you wish to set

the address of the unit using this switch, you must rst identify and make note of an available

address found on your network.

SRH200 Default=2 Permitted=0...127 (BACnet)

SRH300 Default=1 Permitted=0...127 (BACnet)

Before connecting the device to your network, set the address you wish to have on the switch

following the above format and table below.

Note: You will see from the table there are 8 positions. For this device, the 8th position (or 8th

bit) is ignored.

For example: ID127=0111111

BACnet PICS for this unit are available for download at www.setra.com. This unit’s ID as well

as many other properties are also read/writable from your BACnet console.

7.2 Setting BACnet address using the software

Remove the units faceplate. You will see an address switch (pictured below). If you wish

to set the address of the unit using Setra product conguration software, verify all these

switches are set to “0”.

Prior to adding unit to your network, power up the unit according to connection diagram on

page 3. Now connect the Setra PCA adapter to the unit and to your laptop.

Start the Setra product conguration software. The software should automatically identify your

unit after a few seconds and begin graphing and displaying sensor data.

Click on the communication settings found on left menu. The screen below will be displayed.

Here you can set baud rate, data, parity, and stop bits. In the Bus address cell, you can enter

the following ranges.

Note: Regardless of whether you are setting the address in the software or by using the address

switch the following settings are recommended.

38400/8/NONE/1

SRH200 Default=2 Permitted=0...127 (BACnet)

SRH300 Default=1 Permitted=0...127 (BACnet)

7.3 Setting Modbus address using the software

Remove the units faceplate. You will see an address switch (pictured below). If you wish

to set the address of the unit using Setra product conguration software, verify all these

switches are set to “0”.

Prior to adding unit to your network, power up the unit according to connection diagram on

page 3. Now connect the Setra PCA adapter to the unit and to your laptop.

Start the Setra product conguration software. The software should automatically identify your

unit after a few seconds and begin graphing and displaying sensor data.

Click on the communication settings found on left menu. The screen below will be displayed.

Here you can set baud rate, data, parity, and stop bits. In the Bus address cell, you can enter

the following ranges.

SRH200 Default=245 Permitted=0...247 (Modbus)

SRH300 Default=242 Permitted=0...247 (Modbus)

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